The real question is: Does ANYONE know who he is, or is he truly anonymous? It's conceivable that his family, co-workers, or project contributors know who he is; it's also believable that he is the only one who knows his identity. I can imagine LOTS of people developing software and working on a project where no one else really knows what they're working on.
Some of us have suspicions and speculations. None of us as far as I know have evidence. Also? I don't think anyone who has real grounds for suspicions and speculations really wants to know.
The Satoshi part has been played. There is no reason to revisit it, and the play goes on.